Although you may meet some difficulties, you should never _____．
A．turn up B．get up
C．give up D．grow up
Stop ______ about the traffic. Just think about what we can do to improve it.
A.complain B. to complain
C. complaining D. complained
I can't connect my computer to the Interrnet. There must be ______ wrong with it.
A. something B.everything
C.anything D.nothing
Mr. Li asks the students ______ in the river, because it’s too dangerous.
A. swim B. to swim
C. not to swim D. to not swim
interesting subjects they are !
A. What B. How C. What an D. How an
To live a green life, we should try to save ____ energy and produce＿＿pollution.
A. more; less B. less; more
C. more; fewer D. most; least
